Frugal Innovation Plastic has a great number of benefits that have made itan essential material in our life,being one of the most used and produced materials around the world,over the past decades. In addition, its manufacturing is even going to increasein the next years. Consequentially, the fact of such a huge production is connected toanenormous waste generation. For this reason, it is important to takecare of the environment through a green concept, circularity and recycling besides alerting the population in order to become awareof this problemand to change bad habits. Circular Economy has emerged as one of the main conceptsthat can bringsolutions on this matterenabling the reduction of the environmental damage. Therefore, 3D printing has emerged as one of the most scalable technologies to implement the concept of circular economy. On the other hand, a successful solution must be affordable in order to encourage to develop these new practices. Within this context, it has emerged Frugal Innovation which intends to provide good results facing financial or operative restraints. The goal of this Master dissertationis based on circular economy concept through plastic recycling(PET bottles)into 3D printed productsin a scholar demonstration. Methodologies are employed with frugal concept as reference, trying to offer an inexpensive solution. Most of the difficulties come from extrusion and filament quality while some of the main results obtained are: avoid glue, take into account the appropriate parameters of the extruder or add a cooling system